Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation

Exceptionally preserved stromatolites have been found in the shallow marine carbonate facies of the Callovian-Oxfordian La Manga Formation, in the Neuquén Basin (Argentina). The stromatolites exhibit planar and crinkle lamination, often disrupted by sheet-cracks, mudcracks, and fenestral structures,...

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Detalles Bibliográficos
Autores: Palma Durán, Ricardo, Kietzmann, Diego A., Comerio, M., Martín Chivelet, Javier, López Gómez, José, Bressan, Graciela Susana
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/35053
Acceso en línea:https://hdl.handle.net/20.500.14352/35053
Access Level:acceso abierto
Palabra clave:551.762(82)
551.3.051(82)
Stromatolite
Nanobacteria
Jurassic
Neuquén Basin
Argentina
Estromatolito
Jurásico
Cuenca Neuquina
Geología estratigráfica
2506.19 Estratigrafía
id ES_2ef4bf19071d7d64f7fced8babf0d3fe
oai_identifier_str oai:docta.ucm.es:20.500.14352/35053
network_acronym_str ES
network_name_str España
repository_id_str
spelling Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservationPalma Durán, RicardoKietzmann, Diego A.Comerio, M.Martín Chivelet, JavierLópez Gómez, JoséBressan, Graciela Susana551.762(82)551.3.051(82)StromatoliteNanobacteriaJurassicNeuquén BasinArgentinaEstromatolitoJurásicoCuenca NeuquinaGeología estratigráfica2506.19 EstratigrafíaExceptionally preserved stromatolites have been found in the shallow marine carbonate facies of the Callovian-Oxfordian La Manga Formation, in the Neuquén Basin (Argentina). The stromatolites exhibit planar and crinkle lamination, often disrupted by sheet-cracks, mudcracks, and fenestral structures, which indicate periodic subaerial exposure. These and other evidences suggest that these stromatolites grew in low energy upper intertidal to lower supratidal environments. They consist of fine micrite/microsparite crystal fabrics (with a remarkable lack of allochems) that define submillimiter alternations of dense laminae. Extensive SEM examinations of polished samples of the stromatolites reveal exceptional preservation of rod-shaped bacteria, coccoid like microorganisms, and abundant aggregates of framboidal pyrite. The rod-like bacteria consists of a network of irregular distributed filaments, which range from 150 nm to an uncommon 640 nm in length; diameters range from 54 nm to 90 nm. Subspherical bodies range in size between 70 and 89 nm. The presence of abundant framboidal pyrites is interpreted as the result of the metabolic activity of sulfate–reducing bacteria and decay of organic matter.Universidad Complutense de MadridUniversidad Complutense de Madrid20152015-01-0120152015-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/35053reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/350532026-06-02T12:44:21Z
dc.title.none.fl_str_mv Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
title Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
spellingShingle Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
Palma Durán, Ricardo
551.762(82)
551.3.051(82)
Stromatolite
Nanobacteria
Jurassic
Neuquén Basin
Argentina
Estromatolito
Jurásico
Cuenca Neuquina
Geología estratigráfica
2506.19 Estratigrafía
title_short Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
title_full Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
title_fullStr Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
title_full_unstemmed Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
title_sort Oxfordian microbial laminites from La Manga Formation, Neuquén Basin, Argentina: Remarkable nanobacteria preservation
dc.creator.none.fl_str_mv Palma Durán, Ricardo
Kietzmann, Diego A.
Comerio, M.
Martín Chivelet, Javier
López Gómez, José
Bressan, Graciela Susana
author Palma Durán, Ricardo
author_facet Palma Durán, Ricardo
Kietzmann, Diego A.
Comerio, M.
Martín Chivelet, Javier
López Gómez, José
Bressan, Graciela Susana
author_role author
author2 Kietzmann, Diego A.
Comerio, M.
Martín Chivelet, Javier
López Gómez, José
Bressan, Graciela Susana
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 551.762(82)
551.3.051(82)
Stromatolite
Nanobacteria
Jurassic
Neuquén Basin
Argentina
Estromatolito
Jurásico
Cuenca Neuquina
Geología estratigráfica
2506.19 Estratigrafía
topic 551.762(82)
551.3.051(82)
Stromatolite
Nanobacteria
Jurassic
Neuquén Basin
Argentina
Estromatolito
Jurásico
Cuenca Neuquina
Geología estratigráfica
2506.19 Estratigrafía
description Exceptionally preserved stromatolites have been found in the shallow marine carbonate facies of the Callovian-Oxfordian La Manga Formation, in the Neuquén Basin (Argentina). The stromatolites exhibit planar and crinkle lamination, often disrupted by sheet-cracks, mudcracks, and fenestral structures, which indicate periodic subaerial exposure. These and other evidences suggest that these stromatolites grew in low energy upper intertidal to lower supratidal environments. They consist of fine micrite/microsparite crystal fabrics (with a remarkable lack of allochems) that define submillimiter alternations of dense laminae. Extensive SEM examinations of polished samples of the stromatolites reveal exceptional preservation of rod-shaped bacteria, coccoid like microorganisms, and abundant aggregates of framboidal pyrite. The rod-like bacteria consists of a network of irregular distributed filaments, which range from 150 nm to an uncommon 640 nm in length; diameters range from 54 nm to 90 nm. Subspherical bodies range in size between 70 and 89 nm. The presence of abundant framboidal pyrites is interpreted as the result of the metabolic activity of sulfate–reducing bacteria and decay of organic matter.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01
2015
2015-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/35053
url https://hdl.handle.net/20.500.14352/35053
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Complutense de Madrid
publisher.none.fl_str_mv Universidad Complutense de Madrid
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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